Fangrui Product Details And High Quality It Is Used To Back Up Important Data To The Industrial Computer / Embedded System. Only One Ch375dos.sys Driver File Is Needed, The Length Is Less Than 5k, And Only 4k Is Required After Loading. Support Hot Swappable U Disk, Easy To Use, U Disk Can Only Be Plugged In When Needed. Supports Dos Versions From 3, X To 7, X, Compatible With Windows3.x, 95/98 / Me And Other Operating Systems. Supports All File Systems Supported By The . For Example, Dos 7.x Can Support Fat12 / Fat16 / Fat32. The Controller Only Works When The Application Program Reads And Writes The U Disk, And It Does Not Affect The Operation Of The Dos System And Industrial Control Computer When It Is Idle. Used For Non-real-time Data Exchange Between Computer And Industrial Computer / Embedded System. Using The Universal U Disk In The Market, It Is Easier To Buy Than Flash Memory And Electronic Disk, And The Capacity Is Not Limited. Colour:green Material:plastic Size:12x7x1cm/4.72x2.76x0.39 Inch Package Contents: 1x Isa