The sushi's body and the flash-memory module are fixed together with UniBond Extreme Power Glue. However, not all USB sockets are made to the same engineering standard: a few are very tight. If the adhesive fails to grip, you could experiment with a sticky pad, as shown in the photo.

Alternatively, clean them up, and don't refix them. The body will then be a loose fit on the module: push the module into a USB socket and slip the body over it.

Although USB is an international standard, the position, number, alignment, and arrangement of ports is not. Depending on your computer's configuration, and the cables, hubs, and devices you've plugged in, it might be more convenient to use the extension lead. You choose.

To use it, just plug it in: the computer recognises it, adds it to its list of drives, and gives it a temporary drive letter, for example E. When you unplug it, the computer knows it's gone, but doesn't interfere with anything else you're doing. The simplicity of USB makes it a true plug-and-play system.

If you want to use it as a temporary, backup, or archive storage device, you can leave it plugged in all the time. It uses very little current.

Sometimes, manufacturers include free applications such as FlashMail, Mobile Lock, or SecretZip. If you look in My Computer or Windows Explorer, you can find them, open the folder, and experiment. Alternatively, just delete them.

On notebook computers, most USB sockets are horizontal. If your computer has sockets at the back, or they're vertical, or they're very close together, use the extension lead.

If your computer is set back on your worktop, or it's on the floor, or you're using a multi-port USB hub, you may need a longer cable. You can buy one in the shop.

The module has a bright steel case which contains a circuit layer, a formatted flash memory chip, a USB 2.0 interface, and a tiny blue light, visible from the end and the top.

It measures 31mm x 13.5mm x 4.5mm, which probably makes it the world's smallest: it's so small, it's actually smaller than most normal USB A plugs. It can be used with an extension cable, up to 5.0 metres, or a multi-port USB hub.

It takes power from the computer's USB port, so doesn't need a battery or a mains adapter. It uses so little power that it doesn't even get warm when it's permanently connected.

It needs a USB port, but no installation or configuration. The built-in USB 2.0 interface allows a maximum data-transfer rate of 480 Mb/s: 480 million bits a second. Like all USB 2.0 devices, it also works with USB 1.1 sockets.

USB is supported by Windows ME, 2000, and XP, MAC 9.0 and higher, and Linux 2.4 and higher. Windows 98 needs driver software, which you can download free at usbstore.co.uk.

Normally, your computer has a main disk drive where everything is kept. The system usually calls it C drive. If you have a CD player, the computer refers to it, using the next letter, as D drive.
Whenever you plug the USB iDuck in, the computer recognises it immediately and adds it to its list of drives, giving it a temporary drive letter, for example E.
You can write to it by saving your files and read from it by opening your files, in the usual way. When you've finished working, just unplug it.
The raw text on this page needs about 12KB, a jpg photo needs about 60KB, and an mp3 track about 4MB. So a 1GB module can store over 80 000 similar pages, or 12 000 photos, or 240 tracks: approximately.

If you want to customize these products as promotional give-aways or rebranded products, mail or call to discuss your design ideas, quantities, and time constraints.

However, it's not easy to print on the plastic body. But you could: present it with some chopsticks, include a sushi recipe, put it on a wooden geta ... Alternatively, the factory could change the design for a large order, probably 5 000.

They make unusual promotional give-aways: something that almost anyone would be pleased with. Especially as they're problem free and need no special computer skills.