Dedicated drops are items that can only be farmed at one or rarely more sources that have the item assigned to them.
External Source items are mailed to you for activities or purchases outside of the game.
This item can be bought from the Seraph Vendor in the External Origin DLC. If the desired item is not for sale reload and try again. Seraph Vendors sell gear in exchange for Seraph Crystals which can be obtained by killing Seraph Guardians (Invincible Bosses).
Datamined items are not obtainable with legitimate methods. They can only be obtained using bugs or the Cheat Engine on the PC.
World Drops are items that drop from any suitable Loot Source in addition to their other sources.
External Origin World Drops are items that drop from any suitable Loot Source, within the DLC, in addition to their other sources.
Suitable Loot Sources:
Most Enemies: Bosses, badass or non-badass enemies, ...
Red Chests, lockers, garbage containers, cardboard boxes, garbage/skag/... piles
Slot Machines
All Enemies: Bosses, Crew Challenges, Generic Enemies, ...
All kinds of Chests
Vending Machines
Slot Machines
Eridian Fabricator
All Enemies: Bosses, Crew Challenges, Generic Enemies, ...
All kinds of Chests
Quest Reward Items in Borderlands 2 can be farmed on PC by Read-Only farming.
How to Read-Only farm:
Go to the location where you hand in the quest.
Save the game by toggling your Badass Rank on/off.
Then go into the file explorer on your computer. Go to the file path: C:UsersNAMEDocumentsMy GamesBorderlands 2WillowGameSaveData
Go to your most recent Save File (.sav) and: right-click → properties
Under General tick the Read-only box.
Back in-game and hand in the quest.
Exit to the main menu, then back into the game.
Now you will be able to hand in the quest again.
Tip: Store the items in Claptrap's Secret Stash. This way you can get the quest reward items multiple times since they are saved on a different SaveFile.
In Borderlands 3 Quest Reward Items are rewarded after or during a quest. After the quest is completed there are 2 ways to farm base game items:
Hunter 3rd Relic Slot
DLC quest items can't be farmed by these methods.
Dedicated drops are items that can only be farmed at one or rarely more sources that have the item assigned to them.
External Source items are mailed to you for activities or purchases outside of the game.
Relic Hunter Season 1
This item can be bought from the Seraph Vendor in the External Origin DLC. If the desired item is not for sale reload and try again. Seraph Vendors sell gear in exchange for Seraph Crystals which can be obtained by killing Seraph Guardians (Invincible Bosses).