QSFP-40G-SR-BD

QSFP-40G-SR-BD is a Cisco QSFP+ optical transceiver built for 40 Gigabit Ethernet host ports and optical uplinks. The module uses multimode fiber as its optical media for the transmitted and received light across short-distance links. Its front interface uses a duplex LC connector for the two-strand fiber termination at the panel. Transmit and receive operation uses the 832 to 918 nm wavelength range across both optical directions. The maximum documented reach is 150 m across supported laser-optimized multimode cabling. Commercial temperature class applies to this module under Cisco environmental operating conditions. DOM support provides digital optical monitoring through supported Cisco host software and interface commands. The hot-swappable hardware plugs directly into a Cisco QSFP port without powering down the platform. Cisco assigns a gray pull tab color to this bidirectional optic for visual module identification.

QSFP-40G-SR-BD uses two 20 Gbps transmit channels and two 20 Gbps receive channels. TX power range delivers -4 dBm to +5 dBm per lane. RX sensitivity reaches -6 dBm per lane. RX overload point is +5 dBm per lane. With IEEE 802.3ba compliance, the electrical interface follows 40 Gigabit Ethernet signaling requirements. At SFF-8436 compliance, the low-speed electrical interface follows the QSFP MSA management model. Through the QSFP MSA model, host communication uses a two-wire I2C interface. At 3.5 W, power consumption matches the Cisco QSFP cabling specification. Average transmitter power and receiver power apply per lane across the bidirectional optical design. Each optical direction separates send and receive traffic through assigned wavelength bands. Bit-error performance reaches better than 1E-15 under the documented short-reach condition. The longest engineered condition carries a 1E-12 BER guarantee. Optical specifications use average power values rather than peak readings. The BiDi channel structure aggregates paired transmit and receive paths inside the module.

Compatibility data maps this optic to Cisco Nexus 3000 Series, Nexus 5000 Series, and Nexus 6000 Series platforms. Cisco Nexus 7000 Series and Nexus 9000 Series platform families also appear in compatibility entries. It also maps to Cisco Catalyst 9300 Series, Catalyst 9400 Series, and Catalyst 9500 Series platforms. Deployment roles include data centre interconnect, campus backbone, aggregation, and edge uplink designs. OM3, OM4, and OM5 grades provide the required cabling options for documented link planning. These cable grades align with short structured links inside closets, rows, and campus aggregation rooms. Buy QSFP-40G-SR-BD from ORM Systems in new and certified refurbished condition. Certified refurbished stock is tested before dispatch for host recognition and optical operation. Order QSFP-40G-SR-BD online from ORM Systems to check price and request a quote. ORM Systems provides bulk quotation support for enterprise and volume buyers globally.