USB ports were the main reason for purchase. The new laptop uses the C port and I have an external backup drive from the old laptop. And I prefer the mouse. so you can understand why ports are added and are important. I haven't used the SD slots yet. But I have them if needed.
VEMONT 7-Port USB Hub 3.0 with Individual On/Off Switches, LED Light, and 4ft/1.2m Long Cable - USB Splitter Extension for Laptop and PC Computer
9 Review
π Sabrent USB Type-C Hub with 4k HDMI, 60W Power Delivery, 1 USB 3.0 Port, 2 USB 2.0 Ports (HB-TC5P) - Multi-Port
10 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
iVANKY MacBook Pro Docking Station, 9-in-2 USB C Hub Adapter with 4K Triple Display, 100W PD3.0, Ethernet, 2 HDMI, USB-C 3.0, 2 USB-A 3.0, SD & TF for MacBook Pro/Air
9 Review
πΆ Netgear Unite AC770S 4G LTE Mobile WiFi Hotspot - Up to 300Mbps Download Speed - Connects up to 10 Devices - Create WLAN Anywhere - 2 MIMO TS-9 External Antenna Connectors - GSM Unlocked - White
8 Review
π StarTech.com NETRS2321P: 1-Port RS232 to Ethernet IP Converter, Serial over IP Device Server - Black
5 Review
π USR-TCP232-410s: RS232/RS485 Serial to Ethernet Adapter/IP Device Server with DHCP/DNS Support
4 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