maximum RAM in MacBook Pro 1,1?

I guess this is one of the early MacBook Pros, model "MacBook Pro 1,1"

It's two RAM slots originally could handle 1GB DDR2. Is that still the maximum, or are there 2GB chips for those slots available today?

Hardware Overview:

Model Name: MacBook Pro

Model Identifier: MacBookPro1,1

Processor Name: Intel Core Duo

Processor Speed: 2.16 GHz

Number Of Processors: 1

Total Number Of Cores: 2

L2 Cache: 2 MB

Memory: 2 GB

Bus Speed: 667 MHz

Boot ROM Version: MBP11.0055.B08

SMC Version (system): 1.2f10

Serial Number (system): W86100ACVJ5

Hardware UUID: 00000000-0000-1000-8000-0016CB8AA251

Sudden Motion Sensor:

State: Enabled

Thanks,

TD