... , IEEE802.3u 100 base Tx, IEEE802.3ab 1000 base-Tx, and IEEE802.3z 1000 base fx standardCompatible with 3COMs GBIC and SFPAuto ... 90% (non-condensing)Power supply: external, 100 to 260V AC, 5V DC/2A (inner power supply available upon request)EMI: FCC class ...