Techopedia explains Optical Drive. Although an optical drive can be used to read and write, it is mainly used as an input device. The functionality of an optical drive is dependent on optical disks. In other words, an optical drive is of no use without an optical disk inserted into it.
PayPal is one of the world's largest internet payment companies. The company operates as an acquirer, performing payment processing for online vendors, auction sites and other commercial users, for which it charges a fee.hrough PayPal, users can send or receive payments for online auctions on websites like eBay, purchase or sell goods and services, or donate money or receive donations. It is not necessary to have a PayPal account to use the company's services.
Xoom can be used in more than 30 countries and allows transactions to be completed via MasterCard and Visa, among others. You can send or receive as much as $3,000 per transaction through this fraud-free online payment system. These are just eight of the many PayPal alternatives that you can choose from. From time-to-time, new ones pop up. Whatâs important is that you try to do as much research as you can before deciding to stick with one.