A consumer signs a security agreement with a financer to buy a laptop computer for her personal use. The financer takes back a security interest in the laptop. A year later, the consumer buys additional memory for the laptop. She then defaults on the original loan that she took out to buy the laptop. The financer seeks to replevy the laptop with its enhanced memory. Under Article 9 of the UCC, does the enhanced memory qualify as an accession, and if so, does the financer have the right to replevy the laptop with its enhanced memory?