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.
there are three usb ports on the dell inspiron 15(:
This laptop has 4 type A USB 2.0 ports available.
4 USB ports complying on USB 2.0
The Dell Latitude D630 has 4 USB ports.
Yes its great for Doing your small business or just having fun with! It has a DVD drive a ethernet port for internet 4 USB 2.0 ports and much more! The vostro is great for schools home, fun, office, quick searches, and more. The battery has a hour-and-a half life which is a downside. Overall GREAT!!
There is no IrDA port on D830.
No.
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.
usb port
I do not believe this model of DELL has a firewire port available. You will need some kind of adapter.
yes, it has 2 on the back and 1 on the front
yep just plug it in from the usb port from the back.
No, it does not come with a 1394 port, sorry.
Many older laptops (2005 and prior( include at least one serial port. It is not specific to any particular model or brand; they were at one time ubiquitous. The last model that dell made was the D830 latitude. It had serial port built in. we bought some from laptopoutlet.com.
yes i have use this key board with my dell latitude c640 and working fine from USB port and keyboard is an excellant choice if you have good typing speed.
So long as your Dell has a free PCI port, that sound card should work perfectly fine.