Tell you what adapter people use most. Here are views after the vote in the forum dedicated to all’s favorite adapter to share pros and cons and learn tips and tricks.
Here is my 2cents or 2.03cents Canadian on Diagnostic Interfaces.
DG Tech DPA4 or 4+: #2 Choice Metal case makes it durable (must use original USB cable to take advantage of USB port protection)
Nexiq USB-Link: #1 Choice can also be used with toyota techstream and isuzu IDSS (Must be very careful to not break the usb port on older style)
Nexiq Magikey: Was the best back in the day (Need a PC with printer port to connect)
Nexiq LiteLink: Works with Snapon Modis (older J1708 Data Bus only)
Cummins Inline: RP1210a compliant for apps other than Cummins Insite (Doesnt work well with all rp1210a applications)
Movimento/Navlink: Only way to connect to TCU via IDS on Ford/Int LCF/CF Trucks??? (Freezes using servicemax on some laptops)
Navistar IC4: Small durable adapter (Bad customer support, hard to find drivers, USB cable is part of adapter)
Older PF-Diagnose adapter (B&B Electronics): Small durable adapter (serial cable connection)
Eaton Wireless: Long wireless range (intermittent data loss even at close range)
Noregon DLA: #3 Choice alternative to Nexiq and Dearborn (Large size/odd shape)
Caterpillar II: Only way to connect to some offroad equipment with CDL data Bus (Need PC with printer port)
This is just my opinion on the CAT Caterpillar ET above based on personal use.
There are other adapters available and other peoples results/opinions may differ.