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https://ajax.systems/products/12vpsu-hub2/

Compatibility: Hub 2
Input voltage: 8-20 V DC
Output voltage: 4.8 V ± 3%
Switch-on voltage: 8 V ± 2.5%
Switch-off voltage: 6.9-7.5 V (depending on load)
Input current: <1 А
Output current: 1,5 А
Connection: Socket: 6,5 × 2 mm
Plug: 5,5 × 2,1 mm (power jack)