IBM 74Y4064 Handbook page 68

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
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
10 Gb/s
Table 25. Cable type and distance (25 Gb/s)
Rate
25 Gb/s
Table 26. Optical transceivers and cables
Feature code
EB46
EB47
EB4J
EB4K
EB4L
EB4M
EB4P
EN01
EN02
EN03
EN03
52
Managing PCIe adapters
®
qualifies and supports SFP+ optical transceiver (FC EB46) to install into the
Cable type and distance
OM1
0.5 m to 33 m (1.64 ft to
108.26 ft)
Cable type and distance
OM2
0.5 m to 20 m (1.64 ft to
65.62 ft)
Description
10 Gb optical transceiver (purchased separately)
25 Gb optical transceiver (purchased separately)
25 Gb/s 0.5 m (1.6 ft) SFP28 passive copper 25 Gb Ethernet cable
25 Gb/s 1.0 m (3.3 ft) SFP28 passive copper 25 Gb Ethernet cable
25 Gb/s 1.5 m (4.9 ft) SFP28 passive copper 25 Gb Ethernet cable
25 Gb/s 2.0m (6.6-ft) SFP28 passive copper 25 Gb Ethernet cable
[100 Gb/s to 4x25 Gb/s] 2.0 m (6.6-ft) QSFP28 passive copper to SFP28 4x25 Gb
Ethernet split cable
10 Gb/s 1 m (3.3 ft) copper active twinax Ethernet cable
10 Gb/s 3 m (9.8 ft) copper active twinax Ethernet cable
10 Gb/s 5 m (16.4 ft) copper active twinax Ethernet cable
10 Gb/s 5 m (16.4 ft) copper active twinax Ethernet cable
OM2
0.5 m to 82 m (1.64 ft to
269.02 ft)
OM3
0.5 m to 70 m (1.64 ft to
229.66 ft
OM3
0.5 meters to 300 meters
(1.64 ft to 984.25 ft)
OM4
0.5 m to 100 m (1.64 ft to
984.25 ft)