Cisco HS-W-321-C-RJ9 | Wired mono on-ear | RJ9 for IP phones | Noise-canceling boom mic | Wideband audio | Carbon Black AI Delivers OFDMA/MU‑MIMO efficiency and a

Delivers OFDMA/MU‑MIMO efficiency and a multigig uplink to remove wired bottlenecks

Integrated multimode optics provide low power

lightweight connectivity for short rack-to-rack and intra-rack runs where cable management and airflow are critical

C2P airflow variant with redundant hot-swappable PSUs

Cisco HS-W-321-C-RJ9 | Wired mono on-ear | RJ9 for IP phones | Noise-canceling boom mic | Wideband audio | Carbon Black AI Delivers OFDMA/MU‑MIMO efficiency and aSingle ear wired headset designed for clear calls on desk IP phones using an RJ9 (4P4C) headset port. Lightweight adjustable headband, leatherette cushion, and a noise canceling boom microphone for focused conversations in busy workspaces. Wideband audio support helps deliver natural sounding voice quality.