Network troubleshooting and desktop support

Upgrading old computers rather than buying a new one is less expensive, It can also be cheap as a fraction of the price buying a new one, but if it is with to do so, i.e., whatever upgrades you want in your computer system it works fine. For adding an external hard drive, you can add eSATA port to his computer system; eSATA port will also work as a USB port, but for one USB port, if you want to use a printer scanner both, you can buy a printer with scanner device. For RAM, you can add an extra pair to speed up the device, but adding extra RAM will not always solve the problem i.e. if the system's processor is slow.