
Cisco originals are EOL (End Of Life) and no longer available and almost impossible to find. It's almost the same and works fine. And for less money than the originals cost.

Mikrotik RouterBOARD 951Ui-2HnD RB951Ui-2HnD: High-Power 2.4Ghz Wireless AP with 5x10/100 Ports and OSL4
73 Review

Wi-Fi signal amplifier (repeater) TP-LINK TL-WA860RE, white
21 Review

MikroTik Dual-Concurrent Access Point: hAP ac Lite RB952Ui-5ac2nD-US
79 Review

πΆ High-Performance MikroTik hAP Mini RB931-2nD: Small 2GHz Wireless Access Point, 3x 10/100 Ethernet Ports, 650MHz CPU & RouterOS
24 Review

HB-UMLS Sabrent USB 2.0 Hub with 4 Ports and LED Power Switches for Each Port
12 Review

π StarTech.com NETRS2321P: 1-Port RS232 to Ethernet IP Converter, Serial over IP Device Server - Black
5 Review

π StarTech.com NETRS232 Serial to IP Ethernet Device Server - DIN Rail Mountable - Serial Device Server - Serial Over IP Device Server (Black)
4 Review

π CERRXIAN RS232 to Ethernet Serial Device Server - TCP/IP Converter with 1Port DB9 RS232 Serial to Ethernet Connectivity
3 Review