Which ssd is compatible with my macbook pro 13 "late 2011?

Question

I have a macbook pro late 2011, 13 "intel core i5 2.4GHz, my hd is a TOSHIBA MK5065GSXF
Model Name: MacBook Pro
   Model Identifier: MacBookPro8,1
   Processor Name: Intel Core i5
   Processor Speed​​: 2.4 GHz
   Number of Processors: 1
   Total Number of Cores: 2
   L2 Cache (per Core): 256 KB
   L3 Cache: 3 MB
   Memory: 8 GB
   Boot ROM Version: MBP81.0047.B27
   SMC Version (system): 1.68f99
   Sudden Motion Sensor:
   State: Enabled
My HD is
TOSHIBA MK5065GSXF:
   Capacity: 500.11 GB (500,107,862,016 bytes)
   Model: TOSHIBA MK5065GSXF
   Review: GV108B
   Serial Number: 126OCF5QT
   Native Command Queuing: Yes
   Queue Depth: 32
   Removable Media: No
   Removable Drive: Not
   BSD Name: disk0
   Rotational Rate: 5400
   Media Type: Rotational
   Partition Map Type: GPT (GUID Partition Table)
   State S.M.A.R.T .: Verified
   volumes:
EFI:
   Capacity: 209.7 MB (209,715,200 bytes)
   BSD Name: disk0s1
   Content: EFI
Macintosh HD:
   Capacity: 419 GB (418,999,992,320 bytes)
   Available: 103.46 GB (103,456,337,920 bytes)
   Recordable: Yes
   File System: HFS + Chronological Prolific Reg.
   BSD Name: disk0s2
   Mount Point: /
   Content: Apple_HFS
   Volume UUID: BF3C8A89-5C0C-32D3-9152-FA2C8024DF57
Recovery HD:
   Capacity: 650 MB (650,002,432 bytes)
   BSD Name: disk0s3
   Content: Apple_Boot
   Volume UUID: 389848BE-6EBF-350F-BE40-8776ECF756B4
BOOTCAMP:
   Capacity: 80.25 GB (80,247,521,280 bytes)
   Available: 31.39 GB (31,388,819,456 bytes)
   Writable: no
   File system: NTFS
   BSD Name: disk0s4
   Mount Point: / Volumes / BOOTCAMP
   Content: Microsoft Basic Data
   Volume UUID: 34186CAA-1B13-4DFE-900B-E437E44E1B1D
I could not decipher which sata is compatible with my macbook, it is 1, 2 or 3, or what should I buy.

Answer 1

Your machine has a SATA III connection, meaning you can get a negotiated link speed of up to 6.0Gbps.
You may want to take a look at my user tip -> Upgrading Your MacBook Pro with a Solid State Drive.
There are dozens of SSDs that would work in your MacBook Pro. You first need to decide what size you want (or need): they're available from 128GB - 1Terabyte.
Personally, I recommend either the Crucial M550 series or the Samsung EVO series. You can get either from a wealth of different sources. I have 4 Crucials now -> 2 mSATA and two standard 2.5" drives. There were some problems with Macs and the EVO series when they were first introduced but they work just fine with Macs now.
Google both drives and find the best prices for the storage that you need. You can't go wrong with either.
Good luck,
Clinton
MacBook Pro (15-inch Late 2011), OS Mavericks 10.9.4, 16GB Crucial RAM, Crucial M500 960GB SSD, 27” Apple Thunderbolt Display