Cisco GLC-BX40-D-I | 1GbE SFP | 1000BASE-BX40 | 1550T/1310R | 40 km | LC simplex | Industrial temp Condition:Used The modular QD design lets

The modular QD design lets you swap to other QD cables (USB‑A or RJ‑9) as your environment changes

and large-scale AI model inference in single-GPU workstation configurations

This kit includes two stack adapters and one 50cm stacking cable

surveillance aggregation

and high-performance storage networks

Cisco GLC-BX40-D-I | 1GbE SFP | 1000BASE-BX40 | 1550T/1310R | 40 km | LC simplex | Industrial temp Condition:Used The modular QD design letsLong reach industrial 1G BiDi SFP using 1550 nm transmit and 1310 nm receive for single strand SMF up to 40 km. Ideal for metro backhaul and extended campus links where fiber is scarce.