---
manufacturer: Cisco
model: ISR2821
slug: cisco-isr2821
part_number: CISCO2821
u_height: 2
is_full_depth: false
comments: 'Datasheet: [Link](https://www.cisco.com/c/dam/global/de_at/assets/unified_partners/smb/vertriebliche-positionierung/routing/downloads/isr_2800_datenblatt_e.pdf)'
console-ports:
  - name: aux 0
    type: rj-45
    label: AUX
  - name: con 0
    type: rj-45
    label: CONSOLE
power-ports:
  - name: PS1
    type: iec-60320-c14
interfaces:
  - name: GigabitEthernet0/0
    type: 1000base-t
    label: GE 0/0
  - name: GigabitEthernet0/1
    type: 1000base-t
    label: GE 0/1
module-bays:
  - name: AIM slot 0
    label: AIM 0
    description: Advanced Integration Module Slot
  - name: AIM slot 1
    label: AIM 1
    description: Advanced Integration Module Slot
  - name: Slot 0 SubSlot 4
    label: PVDM0
    description: Packet Voice Digital Signal Processor Module Slot
  - name: Slot 0 SubSlot 5
    label: PVDM1
    description: Packet Voice Digital Signal Processor Module Slot
  - name: Slot 0/0
    label: HWIC0
    position: 0/0
    description: High-Speed WAN Interface Card Slot
  - name: Slot 0/1
    label: HWIC1
    position: 0/1
    description: High-Speed WAN Interface Card Slot
  - name: Slot 0/2
    label: HWIC2
    position: 0/2
    description: High-Speed WAN Interface Card Slot
  - name: Slot 0/3
    label: HWIC3
    position: 0/3
    description: High-Speed WAN Interface Card Slot
  - name: Slot 1/0
    label: '1'
    position: 1/0
    description: Single-wide / Extended single-wide Network Module Slot
  - name: Slot 2/0
    label: '2'
    position: 2/0
    description: Network Module Slot