Prolific memory maker Kingston has upgraded its line of SDHC memory cards, which now includes a 16GB model. The SD4/16GB is the largest SDHC option from the company, and should theoretically be able to hold over four hours of six-megapixel video, or some 5,080 JPEG photos captured at an eight-megapixel resolution. Unlike Kingston's other SDHC options however, the 16GB card is strictly available at Class 4 speeds (4MBs+), whereas the 4 and 8GB cards can also be had in Class 2 and Class 6 editions. Buying an SD4/16GB costs $231.