what do you mean, what are the usb ports, they are for high speed complication, usually 2 on back Acers have 1 on the right side , 2 small one left..
You want a USB hub.
There is no minimum or required number for USB ports on a laptop. Depending on the age and design of the laptop, it could be anywhere from zero to ten. I have seen only 2 USB ports on older laptops, most of the new ones atleast have 4 USB ports. Netbooks(10" & 11") have not more than 2 USB ports. If in anycase you need more USB ports, you could buy an USB hub for as less as 10$, which will add 4 more ports to your laptop.
it has three
if the Dell computer has USB ports, then all you would need is the USB-iPod cable and download/install iTunes. If you system is really old and only have serial ports (9-pin male ports) and no USB ports, then you would need to get a PCI USB card installed into your system. Do not use Serial-USB adapters, as they do not always work.
Dell Mini has Wi-Fi built in it for connectivity. Internal Bluetooth and Webcam are optional. It has 3 USB ports. It was discontinued from May,2009.
The Dell D520 does not have a dedicated printer port. It has 4 USB ports, any of which could be used to attach a modern printer.
The Dell Inspiron 530 desktop does not have any PS/2 mouse or keyboard ports; both the supplied keyboard and mouse are attached via USB.
iPads do have usb ports. You just have to buy an adapter
This Panasonic Toughbook has 3 USB ports.
Who told you it had no USB ports? Of course it has USB ports. The iMac has 4 USB ports, 1 Firewire port, 1 Thunderbolt port (2 on the 27" iMac), 1 Ethernet port.
Yes, it's. You have to purchase either a PCI wireless card (you will have to open the computer case to install it) or USB wireless adapter (which is easier to install, just put it one of usb ports).
A Dell Dimension 1100 has two USB 2.0 ports on the front and four USB 2.0 ports on the back. Therefore, you should look for an external hard drive with a USB 2.0 interface. USB 1.1 and 1.0 will work as well, but are much slower, so you probably won't want to use them.