Editing Small Form-factor Pluggable (section)

==SFP types==
SFP transceivers are available with a variety of transmitter and receiver specifications, allowing users to select the appropriate transceiver for each link to provide the required ''optical'' or ''electrical reach'' over the available media type (e.g. [[twisted pair]] or [[Twinaxial cabling|twinaxial]] copper cables, [[multi-mode]] or [[single-mode]] fiber cables). Transceivers are also designated by their transmission speed. SFP modules are commonly available in several different categories.

{| class="wikitable" style="text-align:center;"
|+ Comparison of SFP types
|-
! Name
! Nominal <br/>speed
! Lanes
! Standard
! Introduced 
! Backward-compatible
! [[PHY#Ethernet physical transceiver|PHY]] interface
! Connector
|- 
| align="left" | SFP
| {{nowrap|100 Mbit/s}} 
| 1
| [[Small Form Factor Committee|SFF]] INF-8074i
| 2001-05-01
| {{n/a|None}}
| MII
| LC, RJ45
|-
| align="left" | SFP
| {{nowrap|1 Gbit/s}} 
| 1
| [[Small Form Factor Committee|SFF]] INF-8074i
| 2001-05-01
| {{nowrap|100 Mbit/s}} SFP*
| SGMII
| LC, RJ45
|-
| align="left" | cSFP
| {{nowrap|1 Gbit/s}} 
| 2
|
| 
| 
| 
| LC 
|-
| align="left" |SFP+
| {{nowrap|10 Gbit/s}} 
| 1
| [[Small Form Factor Committee|SFF]] SFF-8431 4.1
| 2009-07-06
| SFP
| XGMII
| LC, RJ45
|-
| align="left" | SFP28
| {{nowrap|25 Gbit/s}} 
| 1
| [[Small Form Factor Committee|SFF]] SFF-8402
| 2014-09-13
| SFP, SFP+
| 
| LC
|-
| align="left" | SFP56
| {{nowrap|50 Gbit/s}} 
| 1
|
| 
| SFP, SFP+, SFP28
| 
| LC 
|-
| align="left" | SFP-DD
| {{nowrap|100 Gbit/s}}
| 2
| rowspan="3" | SFP-DD MSA<ref name=sfp-dd.spec/>
| 2018-01-26
| SFP, SFP+, SFP28, SFP56
| 
| LC 
|-
| align="left" | SFP112
| {{nowrap|100 Gbit/s}} 
| 1
| 2018-01-26
| SFP, SFP+, SFP28, SFP56
| 
| LC 
|-
| align="left" | SFP-DD112
| {{nowrap|200 Gbit/s}} 
| 2
| 2018-01-26
| SFP, SFP+, SFP28, SFP56, SFP-DD, SFP112
| 
| LC 
|-
! colspan="8" | QSFP types
|-
| align="left" | QSFP
| {{nowrap|4 Gbit/s}}
| 4
| [[Small Form Factor Committee|SFF]] INF-8438
| 2006-11-01
| {{n/a|None}}
| GMII
|
|-
| align="left" | QSFP+
| {{nowrap|40 Gbit/s}} 
| 4
| [[Small Form Factor Committee|SFF]] SFF-8436
| 2012-04-01
| {{n/a|None}}
| XGMII
| LC, MTP/MPO
|-
| align="left" | QSFP28
| {{nowrap|50 Gbit/s}}
| 2
| [[Small Form Factor Committee|SFF]] SFF-8665 
| 2014-09-13
| QSFP+
| 
| LC 
|-
| align="left" | QSFP28
| {{nowrap|100 Gbit/s}}
| 4
| [[Small Form Factor Committee|SFF]] SFF-8665 
| 2014-09-13
| QSFP+
| 
| LC, {{nowrap|MTP/MPO-12}}
|-
| align="left" | QSFP56
| {{nowrap|200 Gbit/s}} 
| 4
| [[Small Form Factor Committee|SFF]] SFF-8665 
| 2015-06-29
| QSFP+, QSFP28
| 
| LC, {{nowrap|MTP/MPO-12}}
|-
| align="left" | QSFP112
| {{nowrap|400 Gbit/s}} 
| 4
| [[Small Form Factor Committee|SFF]] SFF-8665 
| 2015-06-29
| QSFP+, QSFP28, QSFP56
| 
| LC, {{nowrap|MTP/MPO-12}}
|-
| align="left" | QSFP-DD
| {{nowrap|400 Gbit/s}} 
| 8
| [[Small Form Factor Committee|SFF]] INF-8628
| 2016-06-27
| QSFP+, QSFP28,<ref name="Cisco-400G_QSFP-DD">{{cite web |title=Cisco 400G QSFP-DD Cable and Transceiver Modules Data Sheet |url=https://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/datasheet-c78-743172.html |website=Cisco |access-date=2020-03-27 |language=en}}</ref> QSFP56
| 
| LC, {{nowrap|MTP/MPO-16}}
|}

Note that the QSFP/QSFP+/QSFP28/QSFP56 are designed to be electrically backward compatible with SFP/SFP+/SFP28 or SFP56 respectively. Using a simple adapter or a special direct attached cable it is possible to connect those interfaces together using just one lane instead of four provided by the QSFP/QSFP+/QSFP28/QSFP56 form factor. The same applies to the QSFP-DD form factor with 8 lanes which can work downgraded to 4/2/1 lanes.

=== {{nowrap|100 Mbit/s}} SFP ===
<!--Information below would probably be better presented as a table-->
<!--https://members.snia.org/document/dl/26184-->

* Multi-mode fiber, [[LC connector]], with '''{{fontcolour|black|#f1f5fc|black}}''' or '''{{fontcolour|#CCCC00|#f1f5fc|Beige}}''' color coding
** '''SX'''{{snd}}850&nbsp;nm, for a maximum of 550&nbsp;m 
* Multi-mode fiber, [[LC connector]], with '''{{fontcolour|blue|#f1f5fc|blue}}''' color coding
** '''[[Fast Ethernet#100BASE-FX|FX]]'''  {{snd}}1300&nbsp;nm, for a distance up to 5&nbsp;km. 
** '''[[Fast Ethernet#100BASE-LFX|LFX]]''' (name dependent on manufacturer){{snd}}1310&nbsp;nm, for a distance up to 5&nbsp;km.
* Single-mode fiber, LC connector, with '''{{fontcolour|blue|#f1f5fc|blue}}''' color coding
** '''[[Fast Ethernet#100BASE-LX|LX]]'''{{snd}}1310&nbsp;nm, for distances up to 10&nbsp;km 
** '''[[Fast Ethernet#100BASE-EX|EX]]'''{{snd}}1310&nbsp;nm, for distances up to 40&nbsp;km
* Single-mode fiber, LC connector, with '''{{fontcolour|green|#f1f5fc|green}}''' color coding
** '''[[Fast Ethernet#100BASE-ZX|ZX]]'''{{snd}}1550&nbsp;nm, for distances up to 80&nbsp;km, (depending on fiber path loss)
** '''EZX'''{{snd}}1550&nbsp;nm, for distances up to 160&nbsp;km (depending on fiber path loss)
* Single-mode fiber, LC connector, Bi-Directional, with '''{{fontcolour|blue|#f1f5fc|blue}}''' and '''{{fontcolour|#CCCC00|#f1f5fc|yellow}}'''  color coding
** '''BX''' (officially '''BX10'''){{snd}}1550&nbsp;nm/1310&nbsp;nm, Single Fiber Bi-Directional 100 Mbit SFP Transceivers, paired as '''BX-U''' ({{fontcolour|blue|#f1f5fc|blue}}) and '''BX-D''' ({{fontcolour|#CCCC00|#f1f5fc|yellow}}) for uplink and downlink respectively, also for distances up to 10&nbsp;km. Variations of bidirectional SFPs are also manufactured which higher transmit power versions with link length capabilities up to 40&nbsp;km.
* Copper twisted-pair cabling, [[RJ45 (telecommunications)|8P8C]] (RJ-45) connector
** [[100BASE-TX]]{{snd}} for distances up to 100m.

=== {{nowrap|1 Gbit/s}} SFP ===
<!--Information below would probably be better presented as a table-->
* 1 to 1.{{nowrap|25 Gbit/s}} multi-mode fiber, [[LC connector]], with black or beige extraction lever<ref name="sfpmsa"/>
** '''SX'''{{snd}}850&nbsp;nm, for a maximum of 550&nbsp;m at 1.{{nowrap|25 Gbit/s}} (gigabit Ethernet). Other multi-mode SFP applications support even higher rates at shorter distances.<ref>{{citation |url=http://agilestar.com/p/datasheets/FTLF8524P2BNV-AS.pdf |title=Agilestar/Finisar FTLF8524P2BNV specification}}</ref>
* 1 to 1.{{nowrap|25 Gbit/s}} multi-mode fiber, [[LC connector]], extraction lever colors not standardized
** '''SX+/MX/LSX/LX''' (name dependent on manufacturer){{snd}}1310&nbsp;nm, for a distance up to 2&nbsp;km.<ref>{{Cite web|url=https://www.cdw.com/shop/products/PROLINE-1000BASE-SX-EXT-MMF-SFP-F-CISCO-1310NM-2KM/2240353.aspx|title=PROLINE 1000BASE-SX EXT MMF SFP F/CISCO 1310NM 2KM - SFP-MX-CDW - Ethernet Transceivers|website=CDW.com|access-date=2017-01-02}}</ref> Not compatible with SX or 100BASE-FX. Based on LX but engineered to work with a multi-mode fiber using a standard multi-mode patch cable rather than a mode-conditioning cable commonly used to adapt LX to multi-mode.
* 1 to 2.{{nowrap|5 Gbit/s}} single-mode fiber, LC connector, with blue extraction lever<ref name="sfpmsa"/>
** '''LX'''{{snd}}1310&nbsp;nm, for distances up to 10&nbsp;km (originally, '''LX''' just covered 5&nbsp;km and '''LX10''' for 10&nbsp;km followed later)
** '''EX'''{{snd}}1310&nbsp;nm, for distances up to 40&nbsp;km 
** '''ZX'''{{snd}}1550&nbsp;nm, for distances up to 80&nbsp;km (depending on fiber path loss), with green extraction lever (see GLC-ZX-SM1)
** '''EZX'''{{snd}}1550&nbsp;nm, for distances up to 160&nbsp;km (depending on fiber path loss)
** '''BX''' (officially '''BX10'''){{snd}}1490&nbsp;nm/1310&nbsp;nm, Single Fiber Bi-Directional Gigabit SFP Transceivers, paired as '''BX-U''' and '''BX-D''' for uplink and downlink respectively, also for distances up to 10&nbsp;km.<ref>{{citation|title=Single Fiber Bidirectional SFP Transceiver|url=http://www.interlinkweb.com/systemics/assets/product_images/mrv/MRV-OP-SFPB_A4_HI-1.pdf|archive-url=https://web.archive.org/web/20160419114354/http://www.interlinkweb.com/systemics/assets/product_images/mrv/MRV-OP-SFPB_A4_HI-1.pdf|archive-date=2016-04-19|publisher=MRV}}</ref><ref>{{citation|url=http://yamasakiot.com/yamasaki-sfp-transceivers |title=Gigabit Bidirectional SFPs |publisher=Yamasaki Optical Technology}}</ref> Variations of bidirectional SFPs are also manufactured which use 1550&nbsp;nm in one direction, and higher transmit power versions with link length capabilities up to 80&nbsp;km.
** 1550&nbsp;nm 40&nbsp;km ('''XD'''), 80&nbsp;km ('''ZX'''), 120&nbsp;km ('''EX''' or '''EZX''')
** '''SFSW'''{{snd}}single-fiber single-wavelength transceivers, for bi-directional traffic on a single fiber. Coupled with CWDM, these double the traffic density of fiber links.<ref>{{cite web |url=http://www.lightwaveonline.com/articles/2002/09/single-fiber-single-wavelength-gigabit-transceivers-53448792.html|title=Single-fiber single-wavelength gigabit transceivers |access-date=2002-09-05 |work=Lightwave|date=September 5, 2002 }}</ref><ref>{{cite web |url=http://www.gigalight.com.cn/solutions/&FrontComContent_list01-12987118519831ContId=3878029b-493c-4e70-b97c-766776c55cd0&comContentId=3878029b-493c-4e70-b97c-766776c55cd0&comp_stats=comp-FrontComContent_list01-12987118519831.html |title=The principle of Single Wavelength BiDi Transceiver |publisher=Gigalight |url-status=dead |archive-url=https://web.archive.org/web/20140403232845/http://www.gigalight.com.cn/solutions/%26FrontComContent_list01-12987118519831ContId%3D3878029b-493c-4e70-b97c-766776c55cd0%26comContentId%3D3878029b-493c-4e70-b97c-766776c55cd0%26comp_stats%3Dcomp-FrontComContent_list01-12987118519831.html |archive-date=2014-04-03 |df=mdy-all }}</ref>
** [[Coarse wavelength-division multiplexing]] (CWDM) and [[dense wavelength-division multiplexing]] (DWDM) transceivers at various wavelengths achieve various maximum distances. CWDM and DWDM transceivers usually support link distances of 40, 80 and 120&nbsp;km.
* {{nowrap|1 Gbit/s}} for copper twisted-pair cabling, [[RJ45 (telecommunications)|8P8C]] (RJ-45) connector
** [[1000BASE-T]]{{snd}}these modules incorporate significant interface circuitry for [[Physical Coding Sublayer]] recoding<ref>{{citation |url=http://www.vitesse.com/products/download.php?fid=295&number=VSC8211 |title=VSC8211 media converter/physical layer specification}}</ref> and can be used only for [[gigabit Ethernet]] because of the specific line code. They are not compatible with (or rather: do not have equivalents for) [[Fibre Channel]] or SONET. Unlike most non-SFP, copper 1000BASE-T ports integrated into most routers and switches, 1000BASE-T SFPs usually cannot operate at [[100BASE-TX]] speeds.
* {{nowrap|100 Mbit/s}} copper and optical{{snd}}some vendors have shipped {{nowrap|100 Mbit/s}} limited SFPs for [[fiber-to-the-home]] applications and drop-in replacement of legacy [[100BASE-FX]] circuits. These are relatively uncommon and can be easily confused with {{nowrap|100 Mbit/s}} SFPs.<ref>{{Cite web|url=http://www.fs.com/c/100base-sfp_1668|title=Fiberstore: 100&nbsp;M SFPs}}</ref>
* Although it is not mentioned in any official specification document the maximum data rate of the original SFP standard is {{nowrap|5 Gbit/s}}.<ref>{{cite web|url=http://www.siemon.com/sis/application-guide/2010-08-20-FAQs-for-SFP-plus.asp |title=FAQs for SFP+ |publisher=The Siemon Company |date=2010-08-20 |access-date=2016-02-22}}</ref> This was eventually used by both 4GFC Fibre Channel and the DDR Infiniband especially in its four-lane QSFP form.
*In recent years,{{when|date=January 2020}} SFP transceivers have been created that will allow [[2.5GBASE-T and 5GBASE-T|2.{{nowrap|5 Gbit/s}} and {{nowrap|5 Gbit/s}} Ethernet]] speeds with SFPs with 2.5GBASE-T<ref>{{cite web|url=https://www.flexoptix.net/en/transceiver/sfp-t-transceiver-2h-gigabit-cat-5e-rj-45-100m-100m-1000m-2500-base-t.html?co8829=85744 |title=2.5GBASE-T Copper SFP |publisher=Flexoptix GmbH |access-date=2019-10-04}}</ref> and 5GBASE-T.<ref>{{cite web|url=https://www.flexoptix.net/en/transceiver/sfp-t-transceiver-5-gigabit-cat-5e-rj-45-70m-100m-1000m-5gbase-t.html?co8831=85745|title=5GBASE-T Copper SFP|publisher=Flexoptix GmbH|access-date=2019-10-04}}</ref>

==={{anchor|SFP+}}{{nowrap|10 Gbit/s}} SFP+<!--[[Enhanced small form-factor pluggable transceiver]] redirects here-->===
[[File:10_Gbit_XFP_and_SFP_transceivers.jpg|thumb|350px|right|A [[10 Gigabit Ethernet]] [[XFP transceiver]], ''top'', and a SFP+ transceiver, ''bottom'']]

The '''SFP+''' ('''enhanced small form-factor pluggable''') is an enhanced version of the SFP that supports data rates up to 16&nbsp;[[Gbit/s]]. The SFP+ specification was first published on May 9, 2006, and version 4.1 was published on July 6, 2009.<ref name="spec">{{cite web|url=https://members.snia.org/document/dl/25891|title=SFF-8431 Specifications for Enhanced Small Form Factor Pluggable Module SFP+ Revision 4.1|date=July 6, 2009|access-date=2023-09-25}}</ref> SFP+ supports {{nowrap|8 Gbit/s}} [[Fibre Channel]], [[10 Gigabit Ethernet]] and [[Optical Transport Network]] standard OTU2. It is a popular industry format supported by many network component vendors. Although the SFP+ standard does not include mention of {{nowrap|16 Gbit/s}} Fibre Channel, it can be used at this speed.<ref>{{cite web |url=http://www.tek.com/primer/characterizing-sfp-transceiver-16g-fibre-channel-rate|title=Characterizing an SFP+ Transceiver at the 16G Fibre Channel Rate |author=Tektronix | date= November 2013 }}</ref> Besides the data rate, the major difference between 8 and {{nowrap|16 Gbit/s}} Fibre Channel is the encoding method. The [[64b/66b encoding]] used for {{nowrap|16 Gbit/s}} is a more efficient encoding mechanism than [[8b/10b encoding|8b/10b]] used for {{nowrap|8 Gbit/s}}, and allows for the data rate to double without doubling the line rate. 16GFC doesn't really use {{nowrap|16 Gbit/s}} signaling anywhere. It uses a 14.{{nowrap|025 Gbit/s}} line rate to achieve twice the throughput of 8GFC.<ref>{{cite web
 |title       = Roadmaps
 |url         = https://fibrechannel.org/roadmap/
 |publisher   = Fibre Channel Industry Association
 |access-date  = 2023-03-05
}}</ref>

SFP+ also introduces [[10 Gigabit Ethernet#SFP+ direct attach|direct attach]] for connecting two SFP+ ports without dedicated transceivers. Direct attach cables (DAC) exist in passive (up to 7&nbsp;m), active (up to 15&nbsp;m), and active optical (AOC, up to 100&nbsp;m) variants.

{{nowrap|10 Gbit/s}} SFP+ modules are exactly the same dimensions as regular SFPs, allowing the equipment manufacturer to re-use existing physical designs for 24 and 48-port switches and modular [[line card]]s. In comparison to earlier [[XENPAK]] or [[XFP]] modules, SFP+ modules leave more circuitry to be implemented on the host board instead of inside the module.<ref>{{cite web |url= http://www.lightwaveonline.com/articles/print/volume-23/issue-4/technology/10-gigabit-ethernet-camp-eyes-sfp-53428172.html|title=10-Gigabit Ethernet camp eyes SFP+ |work=LightWave |date=April 2006 }}</ref> Through the use of an active electronic adapter, SFP+ modules may be used in older equipment with [[XENPAK]] ports <ref>{{Cite web|url=https://www.flexoptix.net/en/10-gigabit-xenpak-sfp-plus-adapter.html|title=SFP+ to XENPAK adapter}}</ref> and [[X2 transceiver|X2]] ports.<ref>{{Cite web|url=https://www.optcore.net/product/cisco-cvr-x2-sfp10g-compatible-10gbase-x2-to-sfp-converter-module/|title=10GBASE X2 to SFP+ Converter|date=December 27, 2016 }}</ref><ref>{{Cite web|url=https://unoptix.com/collections/10g-sfp|title=SFP Transceiver}}</ref>

SFP+ modules can be described as ''limiting'' or ''linear'' types; this describes the functionality of the inbuilt electronics. Limiting SFP+ modules include a signal amplifier to re-shape the (degraded) received signal whereas linear ones do not. Linear modules are mainly used with the low bandwidth standards such as [[10 Gigabit Ethernet#10GBASE-LRM|10GBASE-LRM]]; otherwise, limiting modules are preferred.<ref>{{cite web |url= http://www.lightwaveonline.com/general/the-road-to-sfp-examining-module-and-system-architectures-54884162.html |title=The road to SFP+: Examining module and system architectures |date= January 22, 2008 |author= Ryan Latchman and Bharat Tailor |work= Lightwave |access-date=2011-07-26 |archive-url=https://archive.today/20130128011127/http://www.lightwaveonline.com/articles/2008/01/the-road-to-sfp-examining-module-and-system-architectures-54884162.html |archive-date=2013-01-28 }}</ref>

=== {{nowrap|25 Gbit/s}} SFP28 ===
SFP28 is a {{nowrap|25 Gbit/s}} interface which evolved from the [[100 Gigabit Ethernet]] interface which is typically implemented with 4 by {{nowrap|25 Gbit/s}} data lanes. Identical in mechanical dimensions to SFP and SFP+, SFP28 implements one {{nowrap|28 Gbit/s}} lane<ref>{{Cite web|url=http://www.ethernetsummit.com/English/Collaterals/Proceedings/2015/20150414_H13_Neer.pdf|title=Ethernet Summit SFP28 examples}}</ref> accommodating {{nowrap|25 Gbit/s}} of data with encoding overhead.<ref>{{Cite web|url=http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/datasheet-c78-736950.html|title=Cisco SFP28 product examples}}</ref>

SFP28 modules exist supporting single-<ref>{{Cite web|url=http://global-sei.com/company/press/2016/03/prs022.html|title=SFP28 LR 1310&nbsp;nm transceivers}}</ref> or multi-mode<ref>{{Cite web|url=http://www.smartoptics.com/wp-content/uploads/2015/08/SO-SFP28-SR-R4.0.pdf|title=SFP28 850&nbsp;nm example product}}</ref> fiber connections, active optical cable<ref>{{cite web |url=https://www.mellanox.com/related-docs/prod_cables/PB_MFA2P10-Axxx_SFP25G-AOCxxM-TG_25GbE_SFP28_AOC.pdf |title=25GbE SFP28 Active Optical Cable |publisher=Mellanox |access-date=2018-10-25}}</ref> and direct attach copper.<ref>{{cite web |url=https://www.intel.com/content/dam/www/public/us/en/documents/product-briefs/ethernet-sfp28-cables-brief.pdf |title=Intel Ethernet SFP28 Twinaxial Cables |access-date=2018-10-25}}</ref><ref>{{Cite web|url=http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/datasheet-c78-736950.pdf|title=Cisco SFP28 direct attach cables}}</ref>

===cSFP===
The '''compact small form-factor pluggable''' ('''cSFP''') is a version of SFP with the same mechanical form factor allowing two independent bidirectional channels per port. It is used primarily to increase port density and decrease fiber usage per port.<ref>{{cite web |url=http://www.lightwaveonline.com/articles/2008/02/compact-sfp-compact-sff-msa-group-forms-54884757.html |title=Compact SFP, Compact SFF MSA group forms |work=Lightwave |date=February 20, 2008 |access-date=2018-04-12}}</ref><ref>{{cite web |url=https://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/product_bulletin_c25-682262.html |title=Introducing Compact Small Form-Factor Pluggable Module (Compact SFP) |publisher=[[Cisco Systems]] |access-date=2019-01-12}}</ref>

===SFP-DD===
The '''small form-factor pluggable double density''' ('''SFP-DD''') multi-source agreement is a standard published in 2019 for doubling port density. According to the SFD-DD MSA website: "Network equipment based on the SFP-DD will support legacy SFP modules and cables, and new double density products."<ref>http://sfp-dd.com/ SFP-DD MSA</ref>
SFP-DD uses two lanes to transmit.

Currently, the following speeds are defined:
* SFP112: {{val|100|u=Gbit/s}} using PAM4 on a single pair (not double density)<ref name=sfp-dd.spec>{{cite web |author=SFP-DD MSA|title=SFP-DD/SFP-DD112/SFP112 Hardware Specification for SFP112 AND SFP DOUBLE DENSITY PLUGGABLE TRANSCEIVER Revision 5.1 |url=http://sfp-dd.com/wp-content/uploads/2022/03/SFP-DDrev5.1.pdf |date=March 11, 2022}}</ref>
* SFP-DD: {{val|100|u=Gbit/s}} using PAM4 and {{val|50|u=Gbit/s}} using NRZ<ref name=sfp-dd.spec/>
* SFP-DD112: {{val|200|u=Gbit/s}} using PAM4<ref name=sfp-dd.spec/>
* QSFP112: {{val|400|u=Gbit/s}} (4 × {{val|112|u=Gbit/s}})<ref name=qsfp-dd.msa>{{cite web |last1=QSFP-DD MSA |title=QSFP-DD/QSFP-DD800/QSFP112 Hardware Specification for QSFP DOUBLE DENSITY 8X AND QSFP 4X PLUGGABLE TRANSCEIVERS Revision 6.3 |url=http://www.qsfp-dd.com/wp-content/uploads/2022/07/QSFP-DD-Hardware-Rev6.3-final.pdf |date=July 26, 2022}}</ref>
* QSFP-DD: {{val|400|u=Gbit/s}}/{{val|200|u=Gbit/s}} (8 × {{val|50|u=Gbit/s}} and 8 × {{val|25|u=Gbit/s}})<ref>SFF INF-8628</ref>
* QSFP-DD800 (formerly QSFP-DD112): {{val|800|u=Gbit/s}} (8 × {{val|112|u=Gbit/s}})<ref name=qsfp-dd.msa/>
* QSFP-DD1600 (Draft) {{val|1.6|u=Tbit/s}}<ref>{{cite web |url=http://www.qsfp-dd.com/wp-content/uploads/2024/07/QSFP-DD-Hardware-Rev7.1.pdf |title=QSFP-DD MSA |date=2024-07-25 |access-date=2024-08-15}}</ref>