Refurbished: Comtrend AR-5319 Wireless N Gateway 4-port Ethernet ADSL 2+ Router Modem USB 3.0 with AC Adapter - Newegg.com
Tripp Lite USB Wall Charger 4-Port Compact - GaN Technology, 100W PD Charging, 2 USB-C & 2 USB-A, White; power adapter - 2 x USB-C, 2 x 9 pin USB Type A - 100 Watt
StarTech.com 4 Port USB to Serial RS232 Adapter Hub - DB89 - ICUSB2324 - USB Adapters - CDW.com
Grandstream HT814 4-Port FXS with NAT Router Analog Telephone Adapter
USB to 4-Port RS-232, RS-485 RJ45 VersaCom Serial Interface, Bus-Powered - Sealevel
cnPilot Home & Business R200 802.11n 300 Mbps Wi-Fi WLAN Router with Analog Telephone Adapter (ATA) VoIP Gateway, 4 port Network Switch and 2 phone ports, RoW. No power cord - WirelessUnits.com
D-LINK DI-604 D-Link DSL Ethernet Broadband Router 4 Port w/ AC Adapter | RecycledGoods.com
0700-0287-003 Ascend ISDN Terminal adapter router 4 port hub
Linksys Broadband Router with 2 Phone Ports RTP300 - Router - 4-port s – VSATplus
AbleGrid AC / DC Adapter For Cisco Linksys RVS4000-RF 4-Port Gigabit R – Ablegrid.com