3
QSFP+
transceiver
module
Cable/fiber
diameter
(µm)
Modal
bandwidth
(MHz × km)
Max transmission
distance
QSFP-40G-CS
R4-MM850
Multi-mode,
50/125
2000
300 m (984.25 ft)
4700
400 m (1312.33 ft)
QSFP-40G-LR4
-WDM1300
Single-mode,
9/125
N/A
10 km (6.21 miles)
QSFP-40G-LR4
L-WDM1300
Single-mode,
9/125
N/A
2 km (1.24 miles)
QSFP-40G-BID
I-SR-MM850
Multi-mode,
50/125
2000
100 m (328.08 ft)
4700
150 m (492.12 ft)
QSFP-40G-ER
4-WDM1300
Single-mode,
9/125
N/A
40 km(24.84 miles)
Table 3 QSFP+ DAC cables available for the QSFP+ ports
QSFP+ DAC cable
Cable length
Data rate
LSWM1QSTK0
1 m (3.28 ft)
40 Gbps
LSWM1QSTK1
3 m (9.84 ft)
LSWM1QSTK2
5 m (16.40 ft)
Table 4 QSFP+ to SFP+ DAC cables available for the QSFP+
ports
QSFP+ to SFP+
DAC cable
Cable length
Data rate
LSWM1QSTK3
1 m (3.28 ft)
40 Gbps
LSWM1QSTK4
3 m (9.84 ft)
LSWM1QSTK5
5 m (16.40 ft)
