Trust has rebadged A4Tech's high quality keyboards and mouse products under its own name in the past (Typhoon is another brand that does the same).
You might recognise your particular 280KS model at:
Surface Pro 5 News - release date, UK price, features, specs
Gear VR vs. Daydream: Which delivers the best VR experience?
Best Mac antivirus 2017
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.