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 RB941-2nD RouterBoard hAP Lite: Affordable 2.4GHz Home Access Point
71 Review
MikroTik RBcAPGi-5acD2nD-US: High-performance Dual-Band 802.11ac Access Point
35 Review
Wi-Fi signal amplifier (repeater) TP-LINK TL-WA860RE, white
21 Review
πΆ High-Performance MikroTik hAP Mini RB931-2nD: Small 2GHz Wireless Access Point, 3x 10/100 Ethernet Ports, 650MHz CPU & RouterOS
24 Review
π StarTech.com NETRS2321P: 1-Port RS232 to Ethernet IP Converter, Serial over IP Device Server - Black
5 Review
UGREEN USB 3.0 Ethernet Adapter Hub with RJ45: Fast Gigabit Ethernet Converter, 3 Ports USB 3.0 Hub Compatible for MacBook, iMac, Surface Pro, Chromebook, Laptop, PC
11 Review
HB-UMLS Sabrent USB 2.0 Hub with 4 Ports and LED Power Switches for Each Port
12 Review
π USR-TCP232-410s: RS232/RS485 Serial to Ethernet Adapter/IP Device Server with DHCP/DNS Support
4 Review