Absolute Maximum Specifications
Absolute maximum ratings are those beyond which damage to the device may occur.
Between the operational specifications and absolute maximum ratings, prolonged operation is not intended and permanent device degradation may occur.
Data Input Voltage
Control Input Voltage
This table shows the environmental specifications for the product.
This section shows the range of values for normal operation.
Supply Voltage (Vcc)
Operating Case Temperature
Operating Relative Humidity
|Time propagation delay||--||--||4.5||ns/m||Informative|
OSFP Memory Map
|Page 00 Addr.||Register Name||Value and Description|
19h: OSFP form factor 8x pluggable transceiver
CMIS Revision Compliance
50h: CMIS Rev 5.0
Memory Model, MciMaxSpeed
80h: Flat memory (no paging), no CLEI, max 400 kHz TWI (I2C) frequency
07h: Module Ready, Interrupt not asserted
04 - 84
Lanes and flags
00h: No lane flags, no DDM flags
03h: Passive Copper
86 - 117
Application Descriptors (8 x 4 bytes) numbered 1...8
Host/Media Lane cnt
Host Lane Assignment
86 - 89
31h: InfiniBand NDR, 2 ports
01h: Copper Cable
22h: 4 host + 4 media
55h: Lane 1 and 5
90 - 93
|2Ch: IB SDR (4x two ports)||01h||22h||55h|
94 - 97
|1Bh: Eth 800GBASE-CR8 (8x one port)||01h||22h||55h|
98 - 101
|18h: Eth 400GBASE-CR4 (4x two ports)||01h||11h||FFh|
|45h: 200GBASE-CR2 (four ports)||01h||22h||55h|
106 - 109
|16h: 100GBASE-CR1 (eight ports)||01h||11h||FFh|
|01h: 400GBASE-CR8 (one port)||01h||11h||FFh|
114 - 117
|FFh: 200GBASE-CR4 (two ports)||00h||00h||00h|
118 - 121
Password Chg Entry
122 - 125
Bank Select Byte
Page Select Byte
19h: OSFP form factor 8x pluggable transceiver (same as addr 00)
129 - 144
Vendor name (ASCII), padded w spaces: 'NVIDIA '
Nvidia OUI: 48h, B0h, 2Dh
148 - 163
Part number: 'MCP7Y40-Nxxx'
164 - 165
166 - 181
182 - 189
Date code, (YYMMDD__)
00h: Power Class 1, 07h: max power in units of 0.25 W
Max power consumption
01 (multiplier x 0.25W)
Cable Length (m), 7-6: multiplier x value in bits 5-0 (00 = multiplier of .1 \ 01 = multiplier of 1\10 = multiplier of 10 \11 = multiplier of 100), e.g. 41h: 1 m
Connector Type (SFF-8024) 23h: No separable connector
204 - 207
Cable attenuation at 5, 7, 12.9, 25.8 GHz
Media Lane Info
00h: all near end lanes are implemented
Far End Config.
0Ch: 4x applications with 8x lanes each (aa,cc,ee,gg)
Media IF Technology
0Ah: Copper cable, unequalized
Checksum of bytes 128-221 (low order 8 bits)
223 - 255
Custom data including traceability info
30AWG: 5.7 ±0.0326AWG: 7.1 ±0.03
|Length tolerance||length < 2 m||±25||mm|
|length ≥ 2 m||±50|
Minimum Bend Radius
|OPN||Length (m)||AWG (mm)||Cable Diameter||Min bend radius R (mm)||Assembly Space L** Combined/Single end (mm)|
Minimum assembly bending radius (close to the connector) is 10x the cable’s outer diameter. The repeated bend (far from the connector) is also 10x the cable’s outer diameter. The single bend (far from the connector) is 5x the cable’s outer diameter.
**’Combined’ end is the ‘head’ where the cables join together, inserted into the switch. ‘Single’ end is the ‘tail’ which plugs into the HCA/NIC in a server.
L = Assembly Space. Minimum value depends on the backshell (connector housing) dimensions = the space for the cable assembly behind the rack door.
Assembly Bending Radius
Finned Head Dimensions
QSFP112 Flat Ends Dimensions
Cable Length Definition (specified in Ordering Information section)
Cable Splitting Point
The following label is applied on the cable’s backshell. Note that the images are for illustration purposes only. Labels look and placement may vary.
Images are for illustration purposes only. Product labels, colors, and form may vary.
Backshell Label Legend
|PN – Part Number|
|yy||Cable gauge||American wire gauge|
|SN – Serial Number|
2 characters MT
Year of manufacturing
Week of manufacturing
5 digits for serial number. Reset at start of week to 00001.
|ZZ||HW and SW revision||2 alpha-numeric characters|
|XXAWG||Cable gauge||American wire gauge|
|YYYY-MM-DD||Year-month-day||Year 4 digits, month 2 digits, day 2 digits|
|COO||Country of origin||E.g., China|
|Quick response code||Serial number|
Cable Jacket Label (Middle of Cable)
The following label is applied on the cable’s jacket at each end. Note that the images are for illustration purposes only. Labels look and placement may vary.
The serial number and barcode are for NVIDIA internal use only. Images are for illustration purposes only. Product labels, colors, and form may vary.
Regulatory Compliance and Classification
Safety: CB, TUV, CE, EAC, UKCA
EMC: CE, FCC, ICES, RCM, VCCI
Ask your NVIDIA FAE for a zip file of the certifications for this product.
FCC Class A Notice
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
Handling Precautions and Electrostatic Discharge (ESD)
The cable is compatible with ESD levels in typical data center operating environments and certified in accordance with the standards listed in the Regulatory Compliance Section. The product is shipped with protective caps on its connectors to protect it until the time of installation. In normal handling and operation of high-speed cables and optical transceivers, ESD is of concern during insertion into the QSFP cage of the server/switch. Hence, standard ESD handling precautions must be observed. These include use of grounded wrist/shoe straps and ESD floor wherever a cable/transceiver is extracted/inserted. Electrostatic discharges to the exterior of the host equipment chassis after installation are subject to system level ESD requirements.
Cable Management Guidelines
It is important to follow the instructions and information detailed NVIDIA Cable Management Guidelines and FAQ Application Note to insure proper and optimal installation of this cable and avoid physical damage.