/mcpTechnical Specifications Cisco 4461 Cisco 4451 Cisco 4431 Cisco 4351 Cisco 4331/ 4331-DC Cisco 4321 Cisco 4221(X) Maximum endpoint PoE power capacity with PoE boost (watts) 950 W no redundancy 950 W no redundancy 500 W no redundancy N/A N/A N/A NA (No PoE Support) Sizes and Weights Dimensions (H x W x D) 3.5 x 17.25 x 18.5 in (88.9 x 438.15 x 469.9 mm) 3.5 x 17.25 x 18.5 in (88.9 x 438.15 x 469.9 mm) 1.73 x 17.25 x 19.97 in (43.9 x 438.15 x 507.2 mm) 3.5 x 17.25 x 18.5 in (88.9 x 438.15 x 469.9 mm) 1.75 x 17.25 x 17.25 in (44.45 x 438.15 x 438.15 mm) 1.75 x 14.55 x 11.60 in (44.55 x 369.57 x 294.64 mm) 1.72 x 12.7 x 10" (43.7 x 322.6 x 254 mm) External Power Supply Dimensions (H x W x D) N/A N/A N/A N/A N/A 2.95 x 1.18 x 6.10 in (75 x 30 x 155 mm) 37 x 73 x 152 mm (Phihong mfg PN: AA90U-120A- R) 36.5 x 67 x 155 mm (Delta mfg PN: ADP90GR BA) Shipping Box Dimensions (H x W x D) 9.75 x 22.25 x 26 in (24.76 x 56.51 x 66.04 mm) 9.75 x 22.25 x 26 in (24.76 x 56.51 x 66.04 mm) 7.88 x 22.25 x 28.75 in (200.2 x 565.1 x 730.25 mm) 9.75 x 22.25 x 26 in (24.76 x 56.51 x 66.04 mm) 7.125 x 22.75 x 22.5 in (180.98 x 577.85 x 571.5 mm) 7.0 x 21.5 x 16.125 in (177.8 x 546.1 x 409.6 mm) 4.13 x 18.25 x 12.94" (104.9 x 463.6 x 328.7 mm) Rack height 3 Rack Units (3RU) 2 Rack Units (2RU) 1 Rack Units (1RU) 2 Rack Units (2RU) 1 Rack Unit (1RU) 1 Rack Unit (1RU) 1 Rack Unit (1RU) Rack-mount 19in. (48.3 cm) EIA Included Included Included Included Included Included Optional Rack-mount 23in. (58.4 cm) EIA Optional Optional Optional Optional Optional N/A NA Wall-mount No No Yes No Yes Mounting holes under chassis Yes Weight with 1, 450-WAC power supply (no modules)