The Siemens PSUI, part code S30122-X5083-X, is available from Office Phone Shop.
This psu works with the Hipath 3750 system.
All phones and parts come fully tested and with a full one year warranty.
We carry a large stock of legacy, second-user and new business telephones, phone system spares and parts. If you are unable to locate the part you are looking for then do not hesitate to contact us.