You must use the supplier on your Disabled Students Allowance (DSA) award letter.
If you want to use a different supplier, you must make sure they can supply you with the equipment and any software which meets the recommended specifications outlined in your NAR.
If you've been recommended software, the equipment you purchase must be able to run this software. If it does not run the software, the cost of this equipment may be recovered from you.
Amounts of money quoted for each item of specialist equipment on your NAR are not transferable to another.