No you can't. Your system memory is something completely different than the memory used by USB Drive.
Plug in you USB flash drive to the USB port and go to MY COMPUTER, then RIGHT CLICK on the DEVICE and click on READY BOOST
A USB flash memory drive is a removable hardware device
A user memory for an operating system are the devices in which data is stored. These devices can be built into the computer, such as the hard drive, or they can be an external device, such as a USB pen drive or external hard drive.
a flash drive or pen drive, or possibly a USB key
It is a removable disk and a USB drive.
You can install Windows or Linux using a USB memory stick.
IN USB pen/USB drive their is EEROM, which means Electronicaly Eraisable Read Only Memory. EEROM is a kind of Read only memory in which you can write, read or store and delete your data.
A flash memory card is a card that holds digital data. An example of a flash memory card would be an SD Card, Micro SD, Memory Stick Pro Duo, Flash Drive (Thumb Drive, USB key). All Ipod models except the ipod classic use flash memory. Flash memory has no moving parts, but, hardrives do. Those are classified under, non-flash memory. Flash memory cards have different memory capacities. The higher the capacity, the more expensive it will be. But, the higher capacity, the more stuff can be put on it. Hope this helps
No you need the memory card
There are many different amounts of memory that a person can store on an external USB hard drive. Generally, the largest out there is the 2 TB hard drive.
To check how much memory you have left on a USB drive, connect the USB to your computer. On Windows, open File Explorer, right-click the USB drive, and select "Properties" to view the used and available space. On macOS, open Finder, right-click the USB drive, and choose "Get Info" for a similar overview of the storage details.
A USB Flash Drive by Any Other Name-- finger stick -- memory stick-- pen drive-- disk-on-key--jump drive