each pc is ment to have its own copy of what ever version of windows you are using. you could have one running XP and one running ME. there is nothing from stopping you from having XP on both though, except ya licence from microsoft.
Huawei P10 review
1995-2015: How technology has changed the world in 20 years
An overview: What leading creative agencies are doing to improve diversity
New iPad, iPhone SE & Red iPhone 7 on sale now
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.