User manual Plantronics CS520-XD (English - 22 pages)
How To Connect Your Plantronics CS520, CS510 or C052 Headset To A Comp
Amazon.com: Merritt Compatible Plantronics Battery Replacement for C052, CS50, CS55, CS351n and CS361n, CS510, CS520, W710 and W720 Wireless Headsets : Electronics
Amazon.com: Discover D315 Universal USB Adapter Compatible with Plantronics, Jabra and Sennheiser Wireless DECT Headsets | Allows Your Desk Phone Wireless Headset to Connect to A Computer : Electronics
Plantronics CS520 Wireless Headset - Headsets Direct
Plantronics CS510, C052 and CS520 Wireless Headset Setup WITHOUT Heads
D100Y Wireless USB Base Unit User Manual Plantronics
Plantronics C052 Troubleshooting Guide
User manual Plantronics CS520/A (English - 21 pages)