Oh. Its probably in the box but just in case, download the USB Console port drivers and install them on your laptop. You can get it from Cisco.com with just a registered account and no service contract.

Get a TFTP server for your laptop as well. Bring a spare CF card, CF reader and a USB stick. You shouldn't need a USB serial adapter as its got the USB console feature but its up to you if you want to be prepared.

You got any WICs, PVDMs, NMs or ISMs in this 2921? They're all different types of expansion module.