IBM 74Y4064 Handbook

adapter. Customers can also use their own optical cabling and SFP28 optical transceiver for the
other end. The 25 Gb optical transceiver is capable up to 100 m through the OM4 cable or 70 M
through OM3 cable. Either one or both of the adapter’s two SFP28 ports can be populated.
For 10 GbE, IBM
®
qualifies and supports SFP+ optical transceiver (FC EB46) to install into the
adapter. Customers can also use their own optical cabling and SFP+ optical transceiver for the
other end. The 10 Gb optical transceiver is capable up to 300 M through the OM3 cable or 82 m
through OM2 cable. Either one or both of the adapter’s two SFP28 ports can be populated.
Cable and Transceiver information
Use multimode fiber optic cables with shortwave lasers that adhere to the following specifications:
v OM3 or OM4: Multimode 50/125 micron fiber, 2000 MHz x km bandwidth
v OM2: Multimode 50/125 micron fiber, 500 MHz x km bandwidth
v OM1: Multimode 62.5/125 micron fiber, 200 MHz x km bandwidth
Because core sizes are different, OM1 cables can only be connected to other OM1 cables. For best results,
OM2 cables must not be connected to OM3 or OM4 cables. However, if an OM2 cable is connected to an
OM3 or OM4 cable, the characteristics of the OM2 cable apply to the entire length of the cables. The
following table shows the supported distances for the different fiber optic cable types at different link
speeds.
Table 24. Cable type and distance (10 Gb/s)
Rate Cable type and distance
10 Gb/s OM1 OM2 OM3
0.5 m to 33 m (1.64 ft to
108.26 ft)
0.5 m to 82 m (1.64 ft to
269.02 ft)
0.5 meters to 300 meters
(1.64 ft to 984.25 ft)
Table 25. Cable type and distance (25 Gb/s)
Rate Cable type and distance
25 Gb/s OM2 OM3 OM4
0.5 m to 20 m (1.64 ft to
65.62 ft)
0.5 m to 70 m (1.64 ft to
229.66 ft
0.5 m to 100 m (1.64 ft to
984.25 ft)
Table 26. Optical transceivers and cables
Feature code Description
EB46 10 Gb optical transceiver (purchased separately)
EB47 25 Gb optical transceiver (purchased separately)
EB4J 25 Gb/s 0.5 m (1.6 ft) SFP28 passive copper 25 Gb Ethernet cable
EB4K 25 Gb/s 1.0 m (3.3 ft) SFP28 passive copper 25 Gb Ethernet cable
EB4L 25 Gb/s 1.5 m (4.9 ft) SFP28 passive copper 25 Gb Ethernet cable
EB4M 25 Gb/s 2.0m (6.6-ft) SFP28 passive copper 25 Gb Ethernet cable
EB4P [100 Gb/s to 4x25 Gb/s] 2.0 m (6.6-ft) QSFP28 passive copper to SFP28 4x25 Gb
Ethernet split cable
EN01 10 Gb/s 1 m (3.3 ft) copper active twinax Ethernet cable
EN02 10 Gb/s 3 m (9.8 ft) copper active twinax Ethernet cable
EN03 10 Gb/s 5 m (16.4 ft) copper active twinax Ethernet cable
EN03 10 Gb/s 5 m (16.4 ft) copper active twinax Ethernet cable
52 Managing PCIe adapters

IBM 74Y4064 Specifications

General

Brand	IBM
Model	74Y4064
Category	Adapter
Language	English