Cisco 1000BASE-T SFP Transceiver Module. Maximum data transfer rate: 1000 Mbit/s, Cabling technology: 1000BASE-T. Connectivity technology: Wired. Maximum transfer distance: 3937" (100 m). Compliance industry standards: IEEE 802.3z, IEEE 802.3ah, Safety: Laser Class I 21CFR1040 LN#50 7/2001, Laser Class I IEC 60825-1. Weight: 2.65 oz (75 g)
Cisco 1000BASE-BX-20U SFP Transceiver. Maximum data transfer rate: 1000 Mbit/s, Cabling technology: 1000BASE-BX-20. Connectivity technology: Wired. Maximum transfer distance: 393700.8" (10000 m), Wavelength: 1310 nm. Safety: FDA 21 CFR 1040.10 & 1040.11, EN60950, EN (IEC) 60825-1,2, Certification: FCC Part 15 Class B, EN55022 Class B (CISPR 22B), VCCI Class B.. Power consumption (typical): 1 W