It all depends on the specific card you buy. Some 4Gb cards have a switch on them to configure them as a single 4Gb device or as two 2Gb devices and others don't. You'll have to determine this at the time of purchase. I don't know which brands are designed which way, but perhaps someone else can give you some specific information. ----- Original Message ----- From: "Tataindi" <tataindi@xxxxxxxxxxxxx> To: <bookport@xxxxxxxxxxxxx> Sent: Tuesday, December 12, 2006 8:03 PM Subject: [bookport] Re: 4 gigs with a double 2-gb configuration? Hello, Please, I have a question. If I choose to use a 4GB flash card on the BP, do I have to configure the card to switch between 2gb and 2gb? Or is possible to use the 4gb card without any configuration? Or is better to use a 2gb card?