| Brand | Cisco |
| Model | CISCO2921/K9 |
| Series | Cisco 2900 Series Integrated Services Routers |
| Product Type | Modular integrated services router |
| Onboard WAN Ports | 3 x 10/100/1000 routed |
| RJ-45 Ports | 3 |
| SFP Ports | 1 (use of the SFP port disables the corresponding RJ-45 port) |
| EHWIC Slots | 4 |
| Double-Wide EHWIC Slots | 2 (each uses two EHWIC slots) |
| DSP (PVDM) Slots | 3 |
| Service Module Slots | 1 single-wide or 1 double-wide |
| ISM Slots | 1 |
| DRAM, Default | 512 MB DDR2 ECC |
| DRAM, Maximum | 2 GB |
| CompactFlash, Default | Slot 0: 256 MB; slot 1: none |
| CompactFlash, Maximum | 4 GB per slot |
| External USB 2.0 Flash Slots | 2 x Type A |
| USB Console Port | 1 x Type B (mini-USB), up to 115.2 kbps |
| Serial Console Port | 1 x RJ-45 |
| Serial Auxiliary Port | 1 x RJ-45 |
| Hardware Encryption Acceleration | Yes (embedded) |
| Power Supply Options | AC, AC with PoE and DC |
| External Redundant Power Support | Cisco RPS 2300 through an RPS adapter |
| AC Input Voltage | 100 to 240 VAC, autoranging |
| AC Input Frequency | 47 to 63 Hz |
| AC Input Current Range | 3.4 to 1.4 A |
| AC Input Surge Current | Less than 50 A |
| DC Input Voltage | 24 to 60 Vdc, autoranging positive or negative |
| DC Input Current, Maximum | 12 A at 24 V; 5 A at 60 V |
| Typical Power, No Modules | 60 W |
| Maximum Power, AC Power Supply | 320 W |
| Maximum Power, PoE Power Supply (Platform Only) | 370 W |
| Maximum End-Point PoE Power, AC PoE Power Supply | 280 W |
| Maximum End-Point PoE Power with PoE Boost | 750 W |
| Dimensions (H x W x D) | 3.5 x 17.25 x 18.5 in. (88.9 x 438.2 x 469.9 mm) |
| Rack Height | 2 rack units (2RU) |
| Rack-Mount Widths | 19 in. (48.3 cm) EIA and 23 in. (58.4 cm) EIA |
| Wall Mount | No |
| Weight, AC Power Supply (No Modules) | 29 lb (13.2 kg) |
| Weight, AC PoE Power Supply (No Modules) | 30 lb (13.6 kg) |
| Weight, Typical Fully Configured | 34 lb (15.5 kg) |
| Airflow | Back and side to front |
| Operating Temperature, up to 1,800 m (5,906 ft) | 0 to 40 C (32 to 104 F) |
| Operating Altitude, Maximum | 3,000 m (10,000 ft) |
| Operating Humidity | 10 to 85% relative humidity |
| Storage Temperature | -40 to 70 C (-40 to 158 F) |
| Storage Humidity | 5 to 95% relative humidity |
| Acoustic Sound Pressure, Typical/Maximum | 54.4 / 67.4 dBA |
| Acoustic Sound Power, Typical/Maximum | 62.6 / 74.5 dBA |
| Related Models | CISCO2921-SEC/K9 (security bundle), CISCO2921-V/K9 (voice bundle with PVDM3-32), C2921-VSEC/K9 (voice security bundle with PVDM3-32) |
Overview
- We perform an intensive quality control process on all our products. Units (unless sealed in the original manufacturer’s packaging) are fully tested and certified by our technicians. We run and record diagnostics on serial and operating systems, ensuring they function to the industry standard.
- Unless the listing specifies otherwise, this product comes with a 1 Year Warranty for the original purchaser as enduser of the equipment, applicable to items sold in the United States only. All others sales are supported by a 90 day extended warranty.
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