?Custom Service?We supports regular custom service for your options. such as different compatibilities, different SFP connectors, cable length, cable color, label details and etc. welcome your needs. we provides innovative and cost-effective 1G 10G 25G 40G 100G 200G 400G Fiber Optical Networking Transceiver Modules. ?SR4 vs SR BiDi?The main difference between 100GBASE-SR4 QSFP28 and 100GBASE-SR BiDi QSFP28 is the transmission and connector type. The 100GBASE-SR4 QSFP28 adopts wavelength 850nm transmission with MTP/MPO connector; while the100GBASE-SR BiDi QSFP28 adopts wavelenghth 850nm&900nm transmission with LC duplex connector. but the Max Cable Distance is as the same as 100m on OM4 / 70m@OM3 on the multimode fiber cable MMF. ?Connectors? The transceiver internally multiplexes an XLPPI 4x25G interface into two 50Gb/s electrical channels, transmitting and receiving each optically over one simplex LC fiber using bi- directional optics. This results in an aggregate bandwidth of 100Gbps into a duplex LC cable. This allows reuse of the installed LC duplex cabling infrastructure for 100GbE application. The optical interface uses a conventional LC duplex connector. ?100G QSFP+ SR BiDi?100GBASE-SR Bi-Directional QSFP+ transceiver module, 12 Fibers MTP/MPO Male connectors, up to 100m on OM4 Multimode Fiber (MMF) and 70m on OM3 MMF, short distance transmission over multimode fiber, VCSEL 850nm/900nm transmitter, Hot Pluggable duplex LC receptacles, DDM with I2C interface and Host FEC, Class 1 FDA Laser Safety and RoHS Compliant. 0°C to 70°C(32 to 158°F). ?Wide Compatibility?It's fully compliant and compatible for H3C Networks QSFP28 MSA and IEEE 802.3bm 100GBASE-SR Bi-Directional and CAUI-42 standards, coding as H3C JH419A QSFP-100G-BIDI-MM850.