X142 40G QSFP+ MPO SR4 transceiver - QSFP+ 4X 10Gb, 850 nm laser that provides 40Gb connectivity up to 100 m (328 ft) on MMF - has one MPO SR4 connector (LT: 2-4D)
X142 40G QSFP+ MPO eSR4 transceiver - QSFP+ 4 X 10Gb, 850 nm laser that provides 40Gb connectivity up to 300 m (984 ft) on MMF - has one MPO eSR4 connector (LT: 2-4D)
Refurbished X142 40G QSFP+ MPO eSR4 transceiver - QSFP+ 4X 10Gb, 850 nm laser that provides 40Gb connectivity up to 300 m (984 ft) on MMF - Has one MPO eSR4 connector (LT: 2-4D)